San Francisco Mayor London Breed on Thursday conceded the race to Levi Strauss heir and nonprofit founder Daniel Lurie, who heavily outspent Breed and blamed her for the city's problems with homelessness and drug overdoses.

Mayor London Breed is running for reelection against multiple challengers in a ranked-choice race that has grown competitive in recent weeks.

San Francisco elects its mayor using a ranked choice voting system that allows voters to list up to 10 candidates in order of preference. Lurie was leading Breed in early returns. Lurie, who has never held elective office, pledged to bring accountability and public service back to City Hall, and reveled in his role as a political outsider.